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-rw-r--r--src/proto.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/proto.h b/src/proto.h
index 7b0decda1d..0177b52f28 100644
--- a/src/proto.h
+++ b/src/proto.h
@@ -1,3 +1,6 @@
+#ifndef NEOVIM_PROTO_H
+#define NEOVIM_PROTO_H
+
/*
* VIM - Vi IMproved by Bram Moolenaar
*
@@ -42,3 +45,5 @@ vim_snprintf(char *, size_t, char *, ...);
int vim_vsnprintf(char *str, size_t str_m, char *fmt, va_list ap, typval_T *tvs);
#endif /* !PROTO && !NOPROTO */
+
+#endif // NEOVIM_PROTO_H